166 lines
4.3 KiB
C
166 lines
4.3 KiB
C
/* $NetBSD: lm_pnpbios.c,v 1.14 2008/04/28 20:23:25 martin Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Bill Squier.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: lm_pnpbios.c,v 1.14 2008/04/28 20:23:25 martin Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <machine/bus.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <i386/pnpbios/pnpbiosvar.h>
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#include <dev/sysmon/sysmonvar.h>
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#include <dev/ic/nslm7xvar.h>
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int lm_pnpbios_match(device_t, cfdata_t, void *);
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void lm_pnpbios_attach(device_t, device_t, void *);
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int lm_pnpbios_hints_index(const char *);
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uint8_t lm_pnpbios_readreg(struct lm_softc *, int);
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void lm_pnpbios_writereg(struct lm_softc *, int, int);
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CFATTACH_DECL_NEW(lm_pnpbios, sizeof(struct lm_softc),
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lm_pnpbios_match, lm_pnpbios_attach, NULL, NULL);
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/*
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* XXX - no known pnpbios ids for lm series chips.
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*/
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struct lm_pnpbios_hint {
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char idstr[8];
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int io_region_idx_lm7x;
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};
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/*
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* Currently no known valid pnpbios id's - PNP0C02 is
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* for reserved motherboard resources, probing it is bad.
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*/
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struct lm_pnpbios_hint lm_pnpbios_hints[] = {
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{ { 0 }, 0 }
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};
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int
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lm_pnpbios_hints_index(const char *idstr)
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{
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int idx = 0;
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while (lm_pnpbios_hints[idx].idstr[0] != 0) {
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if (!strcmp(lm_pnpbios_hints[idx].idstr, idstr))
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return idx;
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++idx;
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}
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return -1;
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}
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int
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lm_pnpbios_match(device_t parent, cfdata_t match, void *aux)
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{
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struct pnpbiosdev_attach_args *aa = aux;
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struct lm_pnpbios_hint *wph;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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int rv;
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int wphi;
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if ((wphi = lm_pnpbios_hints_index(aa->idstr)) == -1)
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return 0;
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wph = &lm_pnpbios_hints[wphi];
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if (pnpbios_io_map(aa->pbt, aa->resc, wph->io_region_idx_lm7x,
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&iot, &ioh)) {
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return 0;
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}
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rv = lm_probe(iot, ioh);
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pnpbios_io_unmap(aa->pbt, aa->resc, wph->io_region_idx_lm7x,
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iot, ioh);
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return rv;
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}
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void
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lm_pnpbios_attach(device_t parent, device_t self, void *aux)
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{
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struct lm_softc *sc = device_private(self);
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struct pnpbiosdev_attach_args *aa = aux;
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struct lm_pnpbios_hint *wph;
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wph = &lm_pnpbios_hints[lm_pnpbios_hints_index(aa->idstr)];
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if (pnpbios_io_map(aa->pbt, aa->resc, wph->io_region_idx_lm7x,
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&sc->lm_iot, &sc->lm_ioh)) {
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aprint_error(": can't map i/o space\n");
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return;
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}
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aprint_naive("\n");
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aprint_normal("\n");
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pnpbios_print_devres(self, aa);
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/* Bus-independent attach */
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sc->lm_writereg = lm_pnpbios_writereg;
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sc->lm_readreg = lm_pnpbios_readreg;
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lm_attach(sc);
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}
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uint8_t
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lm_pnpbios_readreg(struct lm_softc *sc, int reg)
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{
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bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
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return (bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA));
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}
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void
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lm_pnpbios_writereg(struct lm_softc *sc, int reg, int val)
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{
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bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
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bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val);
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}
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